You’ll need to add a Poloniex account in your authenticator app. You can do that using either of these 2 methods:

Step 4:

IMPORTANT: Back up your recovery key!

Backup your 16 digit key/ barcode and put it in a safe place. If your phone gets lost, stolen, or erased, you will need this key to get back into your Poloniex account! Without this key, the only way to regain access will be to open a support ticket. Account recovery without your 16 digit key can be a lengthy process.

Step 5:

Your authenticator app will generate a passcode for one time use against the Poloniex account that you just set up. Go back to your Poloniex screen and 1) Enter your password;2) Enter the generated pass code and then hit ‘Enable 2FA’ button.

You're all set! From now on, every time you log into your Poloniex account, you will be asked to enter your password first followed by the 6-digit code from your authenticator app.

I'm getting "Incorrect Code" errors.The most common cause for "Incorrect Code" errors is that the time on your Google Authenticator app is not synced correctly. Follow these steps to correct this.